RESUMEN
There has been a growing interest in the use of portfolios to assess nursing student progress in areas such as critical thinking, problem solving, and communication. The data obtained from student portfolios can be used to improve undergraduate nursing curricula; however in order for change to occur, closing the assessment feedback loop is essential. The portfolio program of one Midwestern school of nursing has successfully used portfolio evidence to effect undergraduate curricular change. This portfolio program, under the direction of the school's Portfolio Subcommittee, involves active participation by students, faculty and administration. Examples of curricular improvements based on portfolio findings included increasing rigor in course assignments, improving student self reflection, promoting students' ability to write in the discipline, and maintaining writing assignments in larger classes.